Thread guide



Sept. 5, 1939. M. DURAFFOURG 2,171,826

THREAD GUIDE Filed Feb. 14, 1958 Patented Sept. 5, 1939 UNITED STATES PATENT OFFICE THREAD GUIDE Max Durafiourg, New York, N. Y.

Application February 14, 1938, Serial No. 190,514

8 Claims.

This invention relates to thread guides such as are used on textile machines as, for instance, on winding, knitting and weaving machines, for the purpose of guiding the yarn or thread and particularly to reciprocating thread guides or yarn guides such as are used on coning machines.

Guides of this character wear out very quickly by the movement of the thread over the guide and require to be constantly watched in order to replace them as soon as the guides are worn and such guides are usually held in place within the jaws of a holder by shellac or the like.

One object of my invention is the provision of means whereby a guide of hard and highly pol- .115 ished material may be held in place within the jaws of the holder without the use of any cementing material and provide for this purpose an adapter formed to detachably support the thread guide itself and to be engaged with the top" 2.0 of the ordinary or standard thread guide holder such as is used on coning machines.

A further object is to provide means whereby a guide of the character stated may be rigidly supported in but have detachable engagement 25 with the usual reciprocating guide holder having the standard top or terminal end, and more particularly to provide an adapter formed to engage grooves in the side faces of the thread guide and which will fit the jaws of the standard '30 holder and may be clamped thereon.

Other objects will appear in the course of the following description.

My invention is illustrated in the accompanying drawing wherein: a 35 Fig. 1 is an elevation of the standard guide holder commonly used in connection with textile machinery.

Fig. 2 is an enlarged elevation of the outer end of the holder showing my guide in place thereon and held in place by an adapter.

Fig. 3 is a section on the line 3-3 of Fig. 2. Fig. 4 is a top plan view of the adapter as it is initially formed.

Fig. 5 is a perspective view of the guide by .45 itself.

Fig. 6 is a section on the line 6-6 of Fig. 5.

Referring to the drawing, l0 designates the usual and standard holder having a foot or flange II at its base and having at its top or outer 59 extremity the opposed outwardly and inwardly block of veryhard material such as a genuine or synthetic precious stone and this may be either colorless and transparent or given any .color. This guide has its forward face disposed normally in such close. proximity to the spool or quill upon which the yarn or thread is being a wound, that it bears against the yarn on the quill as the thread guide and holder are reciprocated.

This guide, as shown in Fig. 3, has the two lateral sides IS. The back of the guide is fiat but the front l6 of the guide is convexly curved 10 from the bottom of the guide towards its upper or outer end. The upper end of the guide is formed with a V-shaped notch H, the side walls l8 of which are rounded downward and inward, as shown in Fig. 2. The bottom l9 of this notch 16 is convexly curved from front to rear. The sides l5 of the guide are formed with grooves 20 extending parallel to the flat rear face of the guide. These grooves will preferably have a uniform depth throughout their entire extent. 20

For the purpose of holding the guide M in the eye or opening l3 of the holder 1, I pro vide an adapter generally designated 2|. This is made of thin sheet metal having a thickness of about one-half milimeter, the plate being stamped out and having the form when initially stamped out as shown in Fig. 4. The plate has outwardly curved side edges 22 and extending into the plate is a rectangular opening 23, and the rear of the plate is formed wth laterally extending tabs or tongues 24 extending in opposite directions with relation to each other and adjacent the forward end of the plate, the plate is formed with the two radially extending tongues 25. Struck out from the plate and intersecting the opening 23 are the two opposed tongues 26 which initially extend inward from the margins of the opening 23. These tongues when bent rearwardly define the notches 21.

The guide l4, it will be seen, is adapted to be slipped into the opening 23, the side walls of this opening engaging in the grooves 20 of the guide, the notched end of the guide being, of course, directed toward the mouth of the opening 23.

It will be noted from Figs. 2 and 5 that the forward end of the guide I4 is beveled on each side of the notch H, as at 28, and by notchingthe forward portion of the adapter at 29, short lugs 3|] are formed which may be bent down against these beveled faces, thus holding the guide against displacement from the opening 23.

When the adapter is put in place against the face of the holder, that is, against the faces of the opposed jaws l2 thereof, it extends across the opening l3 and the guide is disposed with the bottom of the V-groov'e or notch l1 approximately concentric to the curved jaws. The tongues 25 are then bent downward and inward around the side edges of the jaws l2 while the tongues 24 are bent around the holder just below the bases of these jaws. The tongues 26 are bent rearward and outward against the center of jaws I2.

So long as the adapter is in place, the guide will be held against any movement and firmly within the jaws of the holder, but if for any reason, it is desired to remove the guide and replace it, this is easily done by bending out the tongues genuine or synthetic precious stone, yet I do not wish to be limited to this material for the guide.

It is also to be understood that while I have described and illustrated a specific form of guide and a specific form of adapter, I do not wish to be limited to the details of construction or form except as embodied in the appended claims.

What is claimed is:

1. As an article of manufacture, an adapter for supporting a thread guide in a holder, comprising a thin metallic plate having a rectangular recess extending inward from one edge and adapted to receive a thread guide, the plate having a plurality of outwardly extending flexible tongues adapted to be bent over upon the rear face of a thread guide holder and having two flexible tongues adapted to be bent over against the end of the thread guide.

2. As an article of manufacture, an adapter for supporting a thread guide in a holder, comprising a thin metallic plate having a rectangular recess extending inward from the forward edge of the plate, the lateral margins of the plate being outwardly and inwardly curved, the recess having opposed notches and struck-up tongues extending from the inner ends of the notches, the base of the plate having opposite laterally extending flexible tongues, the margin of the plate adjacent the recess having two outwardly extending flexible tongues, the tongues being disposed at an angle to the tongues at the base of the plate, all of the tongues being adapted to be bent over against the rear face ofa holder.

3. The combination of a thread guide for textile machines formed of a block of hard and highly polished material, the block having a rear face and a front face and having a deep Vshaped notch at one end extending from the front to the rear face of the block and the lateral sides of the block having grooves extending parallel to the rear face and an adapter for supporting the thread guide upon a holder, comprising a plate of thin metal having a rectangular recess extending inward from one edge, the recess having a width slightly less than the width of the guide whereby the walls of said recess will enter the grooves in the guide, the walls of said recess being formed with opposed notches and with tongues struck up from said notches and bent over upon the top of the thread guide holder, said plate at its end opposite the entrance of said recess having opposed laterally extending flexible tongues and the side edges of the plate adjacent the opening of the recess having opposed outwardly extending flexible tongues disposed at an angle to the tongues of the base of the plate and the said tongues being adapted to be bent over upon the back of a holder to retain the adapter in place.

4. The combination of a thread guide for textile machines formed of a block of hard and highly polished material, the block having a flat rear face and a front face and having a deep V-shaped notch at one end and on each side of said notch having a beveled face, the sides of the block having grooves extending parallel to the rear face, and an adapter for retaining the block in place upon a holder, the adapter comprising a thin metallic plate having a rectangular recess extending inward from the front edge of the plate, the recess having a width slightly smaller than the block whereby the walls of the recess will enter said grooves, the adapter plate having notches in the side walls of the recess and flexible tongues extending outward from said notches and adapted to be bent over the back of the holder, the forward ends of the walls of the recess being formed with relatively short tongues adapted to be bent over against the beveled faces of the block to thus retain the block within the recess, the adapter at its end remote from the opening of the recess having two laterally projecting opposed flexible tongues and the side edges of the adapter adjacent the opening of the recess being formed with two opposed radially extending tongues, all of said tongues being adapted to be bent over upon the back of a holder.

5. The combination with a thread guide holder having opposed outwardly and then inwardly curved jaws defining an opening in the end of the holder, of a thread guide formed of a block of hard and highly polished material, the block having a front face and a. flat rear face and having a deep V-shaped notch at one end, the side faces of the block having grooves extending parallel to the flat rear face of the guide, and an adapter for retaining the guide upon the holder, comprising a thin metallic plate having a rectangular recess extending inward from the front edge of the plate, the plate being adapted to lie against the jaws of the holder with the thread guide disposed in the opening of the holder, the plate being formed with opposed notches in each wall of the recess and with tongues struck up from said notches, the tongues being adapted to. be bent over against the rear face of -the thread guide, the end of the plate remote from the opening of the recess having two opposed outwardly projecting flexible tongues adapted to be bent over upon the rear face of the holder at the bases of said jaws, the forward end of the plate having be bent over upon the rear faces of said jaws.

6. As an article of manufacture, an adapter for supporting in a holder, a thread guide having lateral faces provided with grooves, comprising a thin metallic plate having a. recess extending inward from one edge and adapted to receive the thread guide, the plate having a plurality of tongues extending from the plate and adapted to be bent over against the rear face of a thread guide holder to hold the plate in place thereon, and the margins of said recess being adapted to slidably engage in the said grooves in the lateral faces of the thread guide.

'7. The combination of a thread guide for textile machines formed of a block of hard and highly polished material, the block having a flat rear face and a front face, the block having a thread passage formed in its upper end and extending from front to rear of the block, the bottom of the passage being convexly curved from front to rear, the block on each side of said thread passage having a downwardly and outwardly beveled face and the sides of the block having grooves extending parallel to the rear face of the block, and an adapter for retaining the block in place upon a holder, the adapter comprising a thin metallic plate having a rectangular recess extending inward from the front edge of the plate, the recess having a width slightly smaller than the width of the block whereby the walls of the recess will enter said grooves in the block, the forward ends of the walls of the recess being formed with relatively short tongues adapted tobe bent over against the beveled faces of the block to thus retain the block within the recess, the side edges of the adapter being formed with two op-' posed radially extending tongues adapted to be bent over upon the back, of a holder and the lower end portion of the adapter having means constructed and arranged to engage the adapter with said holder.

8. The combination with a bracket formed of sheet material and provided at its outer end with a pair of spaced arms presenting a notch therebetween extending longitudinally of the bracket, of a thread guiding structure, said guiding structure including a clamp having a notch extending longitudinally of the bracket, a plurality of bendable prongs on each side adapted to be bent around said arms when the clamp is in functioning position and a pair of bendable prongs at one end, and an artificial stone guide having a thread guiding notch and a slot on each side, said slots accommodating part of said clamp when in the notch in the clamp, said prongs at the end of said clamp fitting over the end of said guide for preventing accidental removal thereof from the notch in said clamp.

- MAX DURAFFOURG. 

